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M. a. F. KUROWSKB. TYPE WRITING MACHINE.

AFPLICATION mzu- DEC. 1. 1916.

'INVENTOR;

Patented Se t. 9, 1919.

m M n H V w Q @I m HHZ WITNESSES A. G. F. KUROWSKI.

TYPE WRITING MACHINE. 1

APPLICATlONY FILED DEC. 7, 1916.

INVENTOR= %M 7m WITNESSES= ATTORNEY f si-lre-or feed roll mechanism 1n guiding and m gmas; 1 ?PATENT- OFFIQEZ ALFRED of F. KUROWSKII, OFBBOOKLYN,

NEW You; Assmnion T0 UNnnnwoon TYPEWRITER con inua-'55, or NEW YQRK, N. in, A CORPORATION or DELA- WARE. I

re ease .TYrE-wm'rme MACHINE.

Application filed'December 7, 191 serialm. 135,563. I

1 c all whom it may concern:

Be it-known that I, ALFRED G. .FJKonoivski,- a subject of the Emperor of Germany,

(but having taken out his first but not his -final United States'naturalization papers) residing in Brooklyn Borough, in the county of 'Kings, city and State 01": New York, have Vldd 'two' series of ali ned rolls connected 7 out otengagement with the work-members invented certain new and useful Improve which the following is a specificatiom I This invention relates to pressureor feed i'oll-v mechanism for cofiperating "with the.

-platenfto'guide and feed work-memberson" the same. The lnvention further relates to afpaper shield cooperating with the pres feeding the Work-members on the platen. 111 't he'=-pr esent improvement there are protogether, soas'to move as a unit into and on. the platen. This unitary movement elim nates any. tendency to buckle or dis 'aline the' worlesheet on the platen. The

rolls extend through corre'spon'ding openingsj paper shield which envelopsthe lower side of the platen; This paper shield made-ofstilf material forthe greater part of its'circumferential dimension, and then.)

of flexible-material for the remainder of its, area, so as to form one continuous finger or holdingedge which will tightly hug a work-- -she'et to the platenjat the front] of the same.

This flexible strip isprovided with a series of:apertiires'"which add ,to its flexibility "and -'s1n oothen ing action on the work-sheet,

and also permits-theedge .of the work-sheet f I tobew V before it has actually protruded i from be '40- bleas it come's; around the platen,

tween the shieldant 7 tion hetweet-1 the rigid iand flexible portions othei inafter-appean v I fIn theaccompanying drawings,"

ofthe;sh-ield isfinade at a point and in a manner such, that, it will. not-catch onthe 1 edget the work-sheet asiit'- is positioned on p the .platen.

features and advantages 'will' here? Figure 1,13 a? perspective v ew/looking frombelowandin front, showing the rolls and 'shield in, their active position-in engagement with the-platen, and is partly broken away to show the. shifting mech anisrn.

'. platen.

rolls 'in the brackets. V a Fig. 11 is an enlarged vertical detail sech l t f "Theconnee i manner of attaching the'fleXibIe form shown inthejdra.

Fig. 2 is a verticalsection on line 2-2 of Fig. 6, showing the pressure orfeed rollsv and the shield in" their depressed position such that a .worleshee't'maybe admittedto ingmealns. i Flg. 3 IS a mal position in Fig. 4is vertical section from front to rear, showing the particular structure of" view similar to FigJQQ eXcept that parts have been restored to theirnon intimate relation with the the guiding means for the unitary pressure 5 member,;and also the mounting for one of.

the traveling rolls whereby the platen'frame and carriage run along the shift rail.

Fig' '5 .is a longitudinal section through one of the spiral springs which maintain "the, feed rolls in intimate contact with the platen I l l Flg. (Sis a front contracted view in'elevafeeding and guiding mechanism.

a. t1on,'partlybr,oken away to show the underl Fig;- 7'is .a'contracted top plan rviewiwith I half of the platen and, shield. removed to show the-underlying roll. structure. t Figs 8 is a topplan View of the feedrolls, a pairuof. the feed rollsbeing in cross-sectionito show'their structures :Fig. 9'isv an end view, in elevat'ion of the paper shield detached yandshowing one of. .its latches in its inactive and activeposie. sons, in' v full and dotted lines,. respectively, Fig; 10' is a fragmentary sectionjtaken from front to' rea'r, showing the feed rolls as detached from their supporting brackets" to. disclose the arrangement of mountingthe v tion, taken from front to rear, of the front portion of the paper shield, showing I the parts of this invention Referring more particularly to-iseparate mbodied in the platen which is mounted m't-he-usual manstrip-.-to the 106 s; 1 indicatesjthe.

ner, by means of shaft '2, in-a platen frame 3.

The platen may be'ifotated'in .the usual manner by a line-space mechanism and a knob.

downwar anism and to give a-light strong structure. The side lates 1 are also connected at their Sly and forwardly sloping rear sides by. an apron 6, whose particular structure will be more specifically described hereinafter.

In order to assist in guiding and feeding the work-sheet on the platen 1, there are provided two series of pressure or feed rolls 7 and 8; the former are the larger and engage somewhat to the rear of a vertical plane passing through the axis of the platen, while the latter are smaller and engage the platen considerably in front of the same vertical plane. These rolls are each composed ofa spool 9 (Fig. 8), having a rubber covering or coating 10, soas to give a yielding, engaging and yet positive surface. The series of rolls 7 and 8 are rotatably mounted on shafts lland 12 respectively. In order to prevent the rolls from moving longitudinally of the shafts l1 and 12, there are provided suitable spacing collars 13 held themselvesagainst axial movement by means of pins 14.

The rolls are so -mounted that they will move as a unit toward and from the platen 1. To do this, the shafts 11 and 12 have reduced portions 15, which enable them to set into open-sided slots 16 and 17 (Fig. 10) in double-armed brackets 18. The brackets 18 are pivotally mounted at suitable intervals on a supporting rod 19.. The two series of feed rolls are shown to be mounted to move as a unit, having a fixed relation with respect to each other.

Shifting of this unit as a whole is accomplished by providing on the supporting rod 19 at intervals thereon a series of forked arms 20 to which are pivotally connected cranks 21. Normally, the pressure or feed rolls 7 and 8 are held in intimate contact collar or sleeve 27 loosely, mounted on the shaft 22, but provided with a series of openings 28, into which may be inserted a stop or screw 29 arranged to engage limiting edges 20 provided on the cross beam 5; The

action of these spring units is such that they will tend to swing the pins 25 upwardly, thereby tending to move from the position in Fig. 2 to the position in Fig. 3, forcing the feeding mechanism up into intimate en gagement with the platen ,1.

In order to depress the feed rolls out of engagement with the platen, there is pro vided on the rock shaft 22 a crank 31 operated by a thrust link 32,'in turn actuated by a bell crank 33 secured to a stub shaft 3-1, mounted on one of the sides 4: and having secured on its-outer end a finger-piece By depressing this finger-piece 35, the shaft 22 will be rotated, causing the cranks 21 fast thereon to pull down the JOiIlGd feeding rolls against the tension of the springs 23, from the position indicated in Fi '3 to the position indicated in Fig.2. 61m arm of the bell crank 33 engages under the top strip of one of the sides 4 to limit the downward movement of the finger-piece. At this limit the connection of the other arm of the bell crank to the thrust link 32 will have to pass beyond the dead center so that parts will be locked, enabling the operative to have both hands free to insert the work-sheet.

For th1s purpose of guiding the movement of the unitary pressure mechanism, so as to fore, serve to steady the shaft, and, by

bringing it within the channeled frame 5, prevents distortion of the whole platen frame by the tension of the springs 23. Each of the brackets is formed with a V- shaped tooth 39 located in one of the slots 36 and engaging the sides of the corresponding partition 38, so as to limit the extent of the swinging movement of the brackets about the rod 19, and thus limit the extent of canting of the feeding and pressure rolls as a uni To cooperate with the apron 6 and the" rolls 7 and 8' in feeding and guiding the work-sheet around the platen 1, there 18 provided a paper shield 40, which is in the form of a distorted surface of a cylinder, enveloping, more or less closely at different points, the under side of the platen 1. The rear edge of the shield 10 is digitated or provided'with a series of fingersl, which ,mesh with alternating fingers 42, provided on the lower edge of the apron 6.. The fingers 42 arch inwardly at 43 to throw the bottom edge of the work-sheet toward the platen as it is inserted. This prevents the work-sheet catching on the points of the fingers 41 which are covered by humps 43 in the fingers 42.13 The lower ends of the fingers. 12 passconsiderably beyond the fingers.f4;1-', so th'atfthey inturn will be in no dangerof catching on the work-sheet. This form of connec'tlon between the apron (3 new" and the shield/4f) prniits a" relative movenient whereby-thershield flfl 'canbe caused to hug the platdn closely 'ln'i one instanpei when; a .work-sheetis position, f and 3 can beseparatedwidely' from the-platen, in another instance (Fig, 2)' to permit -a 'new I work-sh'eet to'befinsertedjin position ;on the platen." I

.- The movementiof the shield 401 115 trolled by thelsame means whichcontrolthe movement of thel'a 'res'surev or feed rolls 7 and 8. 111 fact,theshield is supported-- by-the shafts 11".and 12 as itrests on some of the collars 13, which may be enlarged relatively to" others -of' the collars forthis purpose. The shieldli's {providedwith suit- 1 able openings 44'- and 45] through which the o- Irolls" 7and" 8 may project to-engage .the platen. The sides of these openings 44: and

' ing on the edge ofthe work-shee't/ 4:5'a1e turned outwardly to avoid their catch- 7 The shield" is further'supported by means of brackets 46, one atfleach end, havlng-open bearings 4 engaging. the supporting rod '19. Lengthwise movement of the shield is prevented by: collars 48' engaging these brackets; The shield is locked in position bya pair oflatches '49 pivotally vmounted. on thebrackets '46, and shiftable from a'position s'hown'in'fu'li lines in Fig. 9 to the position shown (in 1, to bar the open sides of the bearings 47." Each'latch 4C9 is bearing.

formed soas tobe self-acting. The edge 50 thereof-slopes radially nearer to the axis 51"of the -.latch, toward its "outer end from the dipfl52 ofjtlie' latch, so that any tendency of the rod 19. to move out of the bearing 47 will merely. cause the latch 49 to swing slightly and pinchithe rod 19 more tightly against the edge f53 of the The major portion 54 of. the shield 40 is made of a rather stiff sheet' met'al, so as not 1 to be easily bent or distorted and to hold its shape. The-front of the shield 40, however, is formed of a flexible strip 55,.so

that it maybe brought into actual engage ment with the front side of. the platen in order to aid inholding the work-sheet snug on the platenand properly guide the same.

' Tliis'really forms a holding finger for the is properly al ine'd before'theishield and Work-sheet very little below the line of writing'for the full length of the platen. To addto the flexibility of the strip 55 and its smoothening action onthe work-sheet, it

' is provided with-a seriesof apertures 56 locatedjat suitable intervals; These aper tures also enable the operator to see the edge of the-worksheet as it is inserted on the platen, so asto determine whether it pressure rolls are brought up to their engaging position with the platen. The connectionof the flexible strip 55 to the/major portion of the shieldis made so thatthere 5 5 and are bent backwardl 1 The operationof the device the' "above. description.

will be no tendency ofthe edge of the workfsheetoto catch-atthepjunction, -Therear '54 extend "through-openings. 58 in the-strip understood when taken in connection with p I I Ordin arily, the springs 23 hold both thepressure rolls 7oand 8 and thejshield' idin the position :of Figs. 1 and 3 1n intimaterelation with the platen- 1'. This'enabl'es the rolls? and8 to grip the Wo1 k- 'sheet between their surfaces and the surface ofthe platen,- so that by rotating the edge off-the" strip 55I overlapsand underlies the front edge of the major portion of the shield? Tabs-57 on the'majorportion will be readily platen in any usual way, the work-'sheet'will be fed aroundto andpast'the line of writ- ;ing. When it is desired to insert a fresh works-sheet on the platen, the finger-piece 35; 1s"depressed from its F g. 3 position to its Fig; 2pos1tion, whereby the rock shaft 22 will be rotated, swinging down theoranks 21 so as to pull-downjthe arms 20 against tern, sion of-the springs 23. This will depress the supporting rod1'9, carrying down the two series of pressurerollsand the shield. If ,the finger-piece 35 is pressed down far enough, the toggle formed by the link 32 and the connected arm of'the bell crank 33 will "pass beyonda dead center (Fig. 2) and lock,

been 'inserted, The finger-piece 35 can be returned to its raised position, enabling the springs 23 to force the shield 40 and the pressure rolls 7 and 8 up into their normal posltion, causing the pressure rolls to grip the work-sheet, and also causing the flexible strip 55 to hold the worksheet snug on the platen adjacent tothe line of :writing. Variations maybe resorted to Within the scope of the' invention, and portions of the improvements maybe used without others.v Havingthus described my invention, I claim:

1. The combination witha platen frame,

including a bottom channeled bar and a platen, of spaced feed rolls cooperating with said platen, a longitudinal shaft lying within said bar, springs encircling said shaft and normally maintaining saidfeed rolls in intel-mediate engagement with said platen, a

finger-piece, and a connection from said finger-piece to said shaft to release said feed rolls-including a toggle capable of being thrown to a locked position just beyond the dead. center, so as to maintain said feed rolls platen, of feed rolls circumferentially spaced with respect to said platen, a rigid frame for uniting said rolls to move as a unit, a crank shaft lying within said bar for shifting said frame, springs encircling said shaft for maintaining said frame in an upper position with said rolls in engagement with said platen, a toggle connected to said crank shaft, and a finger-piece for operating said toggle to release said feed rolls, said toggle being capable of being thrown beyond a dead center to lock said feedrolls out of engagement with said platen.

3. The combination with a platen frame,

including a bottom channeled bar and a platen, of a supporting rod beneath said.

platen and'lying within said bar, a series of brackets spaced at equal intervals along said rod, a shaft also lying within said bar,

springs tensioned around said shaft and tending to raise the rod, a pair of shafts mounted in said brackets in transversely- I spaced relation with respect to one another,

and a series of rolls on each of said pair of.

shafts cooperating with said platen, said rolls being held in rigid spaced relation with respect to each other by said brackets.

4. The combinationwith a' platen frame, including a bottom channeled bar and a platen, of rolls-adapted to run upon the platen, a roll frame in which said rolls are journaled, partitions on said bar at a plurality of points along its length, a shaft journaled in said partitions for moving the rolls away from the platen, "and springs coiled around said shaft, bearing against the bar and pressing the frame to hold the rolls upon the platen.

"5.;The combination with a platen frame,

a including a bottom channeled bar and a platen, of a supporting rod beneath said platen, guides spaced along said rod for directing vertical movements of said rod, brackets pivotally mounted on said rod and spaced at intervals, shafts mounted on said brackets, said brackets rigidly joining said shafts so as to prevent relative bodily movement, rolls rotatably mounted on said shaft and cooperatingwith said platen, a shaft lying within said bar and having arms underlying said rod, springs encircling said last-named shaft and anchored in said bar,

for maintainingsaid supporting rod and said rolls in their uppermost position so that saidv rolls will cooperate with said 'Jlaten and manual means for de ressin 7 D said rolls out of engagement with said platen against the tension of said springs.

The combination with a platen frame, including a bottom channeled bar' and a platen, of two series of spaced rolls cotiper-' crank shaft lying within said bar and connected to reciprocate said unitary frame and said rolls vertically, springs encircling said shaft and anchored in said-bar to raise the rolls, a linkage for oscillating said crank shaft against the springs, and a finger-piece for operating said linkage.

7. he combination with a platen frame, including a .bottom channeled bar and a platen, of rolls adapted to run upon the platen, a roll framein which said rolls are journaled, partitions on said bar at a plurality of points along its length, a shaft journaled in said partitions for moving the rolls away from the platen, rock arms revoluble on said shaft and bearing against the roll frame, and springs coiled around the shaft and bearing against the bar and the rock arms to hold the rolls upon the platen.

8. The combination with a platen frame,

including a bottom channeled bar and a comprising rock arms, a rock shaft journaled in said partitions and comprising rock arms connected to thefirst rock arms to enable the rocking of the rock shaft to withdraw the rolls from the platen, third rock arms journaled on the rock shaft and bearing against the supporting shaft, and springs coiled around the rock shaft, bearing against the bar and thrusting upon the tlnrd rock arms to carry the rolls against the platen.

9. The combination with a platen frame, including a bottom channeled bar and a platen, of two series of rolls cooperating with said platen, brackets for rigidly uniting said series of rolls to move as a unit, a supporting rod for said brackets, arms on said supporting rod, cranks connected to' said arms, a rock shaft, lying within said bar, on which said cranks are mounted, rotatable to move said rolls outof en agement with said platen, springs encircling said shaft to hold the rolls against the platen, a crank on said rock shaft, a link connected to operate said last-mentioned crank, a bell crank for operating said link, and a fingerpiece for operating said last-mentioned bell crank.

10. The combination with a platen frame, including a bottom channeled bar and a platen, of feed rolls cooperating with said platen, a shaft frame for said feed rolls,

infants platen, said springs being loosely mounted on said rock shaft and connected to act on said'shift frame independently of said reel:

bar against With said platen, a shift frame for said feed rells, a rock shaft jeurnaled Within said springs loosely mounted on said reek shaft operating by engaging said frame and said shift frame at opposite ends.

12. The combination with a platen fraine, including a bottem channeled bar and a platen, -ef eircnrnferentially-spaced feed JE'UllS for said platen, a rigid. frame for mering said feed rnlls as a unit to and from said platen, partitinns spaced along the channel nf the bar, a melt shaft journaled in said partitinns, arms extending from said shaft, and springs hearing against the bar and coiled arnnnd the shaft to lift the arms to carry the rolls against the platen.

13. The ceinhinatien with a platen, of feed rolls fer said'platen, asupporting red,

brackets snpperting said feed rolls en said bar for controlling said shift frame, and

supporting red, a paper shield for said platen inserted man said red, and a self-acting lnclr maintaining said shield on said red.

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